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Abstract Detail

Tropical Biology Section

Tani, Naoki [1], Fukasawa, Keita [2], Kado, Tomoyuki [3], Taguchi, Yuriko [4], Niiyama, Kaoru [5], Yagihashi, Tsutomu [5], Tsumura, Yoshihiko [4], Lee, Soon Leong [6], Lee, Chai Ting [6], Muhammad, Norwati [6], Ripin, bin Azizi [7].

Pollen dispersal pattern and variation of male fecundity for Shorea curtisii growing in hill dipterocarp forest, Peninsular Malaysia.

Knowledge of pollen dispersal patterns and distances is essential to understand plant evolutionary processes and to formulate strategies to conserve forest genetic resources. We investigated the pollen dispersal patterns of S. curtisii on the hill dipterocarp forest in Malaysian Peninsular, using a Neighborhood model modified by including terms accounting for variation in male fecundity amongst individual trees to express heterogeneity in flowering, which is generally observed in tropical forests. Seeds from mother trees were collected for paternity and subsequent statistical model analyses to investigate pollen dispersal and male fecundity pattern in three general flowering events since 1998. Parameters in the model were inferred by hierarchical bayes with MCMC. When flowering tree density is thin, pollen dispersal distance become longer, however selfing rate was increased. Probability of pollen arrival at each mother tree reduced to nearly zero around 200 m. The pollen dispersal of S. curtisii intensively dispersed within near distance and this pattern might be dependent on flowering tree density. The male fecundity was wildly fluctuated between adult trees in the plot. When flowering tree density was low, small number of tree contributed largely to next generation and the variance of male fecundity was very large. The pattern of male fecundity might be also regulated by mainly flowering tree density for S. curtisii in hill dipterocarp forest.

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Japan International Research Center for Agricultural Sciences

1 - Japan International Research Center for Agricultural Sciences, Forestry, Ohwashi 1-1, Tsukuba, Ibaraki, 3058686, Japan
2 - Yokohama National University, Environment and Information Sciences, Tokiwadai 79-7, Hodogaya, Yokohama, Kanagawa, 2408501, Japan
3 - The Graduate University for Advanced Studies, Hayama Center for Advanced Studies, Hayama, Miura, Kanagawa, 2400193, Japan
4 - Forestry and Forest Products Research Institute, Forest Genetics, Matsunosato 1, Tsukuba, Ibaraki, 3058687, Japan
5 - Forestry and Forest Products Research Institute, Tohoku Research Center, Nabeyashiki 92-25, Shimo-Kuriyagawa, Morioka, Iwate, 0200123, Japan
6 - Forest Research Institute Malaysia, Forestry Biotechnology, Kepong, Selangor, 52109, Malaysia
7 - Forest Research Institute Malaysia, Forestry, Kepong, Selangor, 52109, Malaysia

long distance dispersal
pollen dispersal
tropical forest

Presentation Type: Poster:Posters for BSA Sections
Session: P1
Location: Event Tent/Cliff Lodge
Date: Monday, July 27th, 2009
Time: 5:30 PM
Number: P1TB005
Abstract ID:846

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